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TLS , SQL Server and powershell cmdlet - Get-TLSCipherSuite
23 November,2018 by Tom Collins
Question : I have an issue from a developer about an error on the app which may be related to TLS version support by SQL Server From what I can see this could be related to a TLSV1.0 version issue. Does SQL2016 support TLSV1.0 ? how can I view which cipher suites are available on both the server hosting SQL Server and on the desktop connecting to SQL Server
Answer: Microsoft SQL Server 2016 supports TLS 1.1 and TLS 1.2 . SQL Server 2016 and SQL Server 2017 on Windows versions ship with TLS 1.0 to TLS 1.2 support. You have to disable TLS 1.0 and 1.1 if you want to use only TLS 1.2 for client-server communication.
To view the cipher suites available to TLS there is a Powershell cmdlet which returns a list , you should be able to use this on Windows 10 and Windows 2016
Get-TLSCipherSuite | ft name,certificate,cipherlength
Author: Tom Collins (http://www.sqlserver-dba.com)
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